Tonight, Warface: Xbox 360 Edition starts a Double XP event, giving you the opportunity to level up quickly and enjoy accelerated promotion through the ranks. If you also have a booster active, it will also count towards XP earned during this period.
Crytek has also prepared a special bonus support package. This entire weekend plus until Tuesday, every time you earn Crowns you will receive double the amount. So cancel all your weekend plans and start playing Warface: Xbox 360 Edition because the double XP event is kicking off tonight!
Source: Xbox Forums